One of the main criticism of Krita I have read is that there is no clone/healing tool within Krita, and this is more has to do with the fact that it’s hidden as a brush engine. One way to make it more accessible in theory is to have a separate brush tool which automatically switch to clone brush engine with healing option. This makes it more discoverable.
I think that is actually going to happen. A contributor is adding an image preview to the clone tool and Boud advised to have it be made available as a separate tool, if I’m not mistaken.
That would be great! I rarely think of it, and totally forget it exists, because it is just one of many brushes